package cn.usts.edu.servlet;

import javax.servlet.ServletException;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import java.io.IOException;

public class HelloServlet  extends HttpServlet {
    @Override
    protected void doGet(HttpServletRequest req, HttpServletResponse resp) throws ServletException, IOException {

//        获取前端数据
        String method = req.getParameter("method");
        if(method.equals("add")){
            req.getSession().setAttribute("msg","执行了add方法");
        }
        if(method.equals("delete")){
            req.getSession().setAttribute("msg","执行了delete方法");
        }
//        调用业务

//        视图转发或者重定向
//       转发
//        resp.sendRedirect(“/WEB-INF/jsp/test.jsp”);
//        携带参数跳转

        req.getRequestDispatcher("/WEB-INF/jsp/test.jsp").forward(req,resp);
        System.out.println(method+"------------");
    }

    @Override
    protected void doPost(HttpServletRequest req, HttpServletResponse resp) throws ServletException, IOException {
        doGet(req,resp);
    }
}
